APS1086
APS1086 is 600mA Synchronous Step-Down Converter manufactured by APSemi.
DESCRIPTION
The APS1086 is a 2 MHz constant frequency, high efficiency, slope pensated current mode PWM step-down DC-to-DC converter. The device integrates a main switch and a synchronous rectifier for high efficiency without an external Schottky diode. The APS1086 can operate from a 2.5V to 5.5V input voltage and is ideal for powering portable equipment that runs from a single cell lithium-Ion (Li+) battery. It can supply 600m A output current and can also run at 100% duty cycle for low dropout operation, extending battery life in portable system.
The APS1086 features a Power Saving Mode which reduces quiescent current to just 30µA and significantly improves efficiency at light load.
The APS1086 is offered in a low profile (1mm) 5-pin, SOT package, and is available in an adjustable version and fixed output voltage of 1.2V, 1.5V and 1.8V.
APPLICATIONS
- Cellular and Smart Phones
- PDAs
- MP3 Player
- DSP Core Supplies
- Digital Still and Video Cameras
- Portable Instruments
FEATURES
- High Efficiency: Up to 96%
- 2 MHz Constant Switching Frequency
- 600m A Output Current at VIN=3.0V
- Integrated Main switch and synchronous rectifier.
- No Schottky Diode Required
- 2.5V to 5.5V Input Voltage Range
- Available in Fixed Output Voltages and
Adjustable Version
- Output Voltage as Low as 0.6V
- 100% Duty Cycle in Dropout
- Low Quiescent Current: 30µA
- <1u A Shutdown Current
- Slope pensated Current Mode Control for
Excellent Line and Load Transient Response
- Short Circuit and Thermal Fault Protection
- Space Saving 5-Pin Thin SOT23 package
Order Information
Part Number APS1086ES5
Top Mark
H1XY-
APS1086ES5-1.2 H2XY
APS1086ES5-1.5 H3XY
APS1086ES5-1.8 H4XY
- Note XY = Manufacturing Date Code
Temp Range
-40°C to +85°C
Typical Application
Figure1. Basic Application Circuit with APS1086 Adjustable...
